feeling the vtec!

Hey, ive been reading alot of threads bout vtec and people saying how they feel it or hear it. It seems somtime i think i feel it, but i thought it kicked at around 4000rpm in a 4th gen prelude vtec. IF any of you feel it like a little kick, what rpm? You dont have to be flooring it to feel the vtec kick in do you. Im worried somthings not working right, to day i was just trying to see if i could feel it, and i shifted 1 and 2 nd at 6000 somthing and 3rd 4th, 5th around 5000 i wasnt flooring it but i never really felt it kick in. so any commets on when it kicks in or if you feel somthing or a way i can check besides that vtec indicator light? thanks

Hello again h22lude, well I haven't 'owned' a VTEC (my lude is the SI) but I have a friend who owns a RSX type S and let me tell you, once you hit 6000rpm all the way to 8000rpm, man do you feel/hear it. Even more so if you have a CAI. I would think on the VTEC lude it would be the same. Don't know at what rpm it kicks in though, but I thought most VTEC's kicked in around 6000rpm. Maybe someone else with a H22 could shed some light on this?

check your pm h22lude.

Thank you both. im not understanding the red line to well on my car cause this book said dont redline cause i could throw a rod or somthing and others say you can rev all the way to 8000 like ludedude72s friends rsx. Is that safe cause i havent even reved 7000 i dont think, So can i safely go 8000? thanks

Whats the redline on your tech for your H22? Is it 7000? 7500? 8000? As far as running it up to redline it should be ok as long as you don't go over that too many times. I have an auto tranny (soon to be swapped for a manual) and if I floor it, it will shift at redline everytime! Hell I floor it many times a day and haven't had any problems with my engine because of it. So as long as you don't go over your redline limit, don't worry about it, and have fun with your VTEC! Remember you have a high reving engine and you are only going to see its real power if you get the revs up there in the 'close to redline' range.

the redline's there for a reason, but the fuel cutoff is the real safety measure to keep you from overrevving and blowing up your engine. some people fuck with it and remove the fuel cutoff, but then they have built engines that can withstand those higher rpms. i would avoid hitting the fuel cut off as much as possible. though it's not so bad passing the redline when you need to. ideally, you actually want to go to about 7600-7700rpms (redline is 7400), just so when you shift, you stay within the vtec range.

Thanks, out of curiosity how could i find out if the guy who had it before me messed with the fuel cut off. Should i just rev it as high as i can go and if the fuel cut off is working it will stop picking up speed when i hit a certain rpm? But thanks ill try al these tips bout the upper rpms, sorry for all my ignorance, but thanks for helping me.

If u want to do it that way. The fuel cut off when just stop or what it would do is won't let u pass that rpm which really is not giving any more gas to the engine.

v-tec kicks in around 4800-5200 rpm and gives a good push. try driving lightly on the pedal then flooring it at 4800 rpm and you should feel a substantial kick. You can also hear it quite clearly with an aftermarket air filter if you can't hear it open up while standard.

ok in a 4th and 5th gen h22a vtec it engages to high lift at around 5000 rpm and the redline is at 7200 rpm i believe

vtec crossover point is 5200rpms, redline is 7400. that's final. :p

i think dell sounds right

Hey, ive been reading alot of threads bout vtec and people saying how they feel it or hear it. It seems somtime i think i feel it, but i thought it kicked at around 4000rpm in a 4th gen prelude vtec. IF any of you feel it like a little kick, what rpm? You dont have to be flooring it to feel the vtec kick in do you. Im worried somthings not working right, to day i was just trying to see if i could feel it, and i shifted 1 and 2 nd at 6000 somthing and 3rd 4th, 5th around 5000 i wasnt flooring it but i never really felt it kick in. so any commets on when it kicks in or if you feel somthing or a way i can check besides that vtec indicator light? thanks
only when you are more than 50% WOT will VTEC engage
it's a pressure sensor and will not kick in if the gas islightly pressed
try driving 50mhp in 2nd and press gas slighty versus flooring it
should be a huge diff :2cents:

like pikkagtr said, if you are on the gas slightly than you will not feel the vtec, perhaps it is engaged but not strong enough to feel " i could be wrong " BUT definately you will feel vtec if you floor it before the vtec crossover point. so if you want to feel a kick or test it, roll at around 2-3k rpm on 1st gear than floor it you should hear an obvious change in sound and power once you hit that point. its useless to floor it once you're past vtec crossover point to test because you would already be in vtec (high cam) and cant tell the difference from the low to high cam profile. For the 4th gen, vtec is at 5200 and 7400 redline. 5th gen is vtec at 5500 and 7500 redline. I usually shift at 8000 rpm to keep myself in the vtec powerband but i have a reprogammed ecu with a 4th gen vtec crossover,8500 redline and upgraded valves. Hope this helps

like pikkagtr said, if you are on the gas slightly than you will not feel the vtec, perhaps it is engaged but not strong enough to feel " i could be wrong " BUT definately you will feel vtec if you floor it before the vtec crossover point. so if you want to feel a kick or test it, roll at around 2-3k rpm on 1st gear than floor it you should hear an obvious change in sound and power once you hit that point. its useless to floor it once you're past vtec crossover point to test because you would already be in vtec (high cam) and cant tell the difference from the low to high cam profile. For the 4th gen, vtec is at 5200 and 7400 redline. 5th gen is vtec at 5500 and 7500 redline. I usually shift at 8000 rpm to keep myself in the vtec powerband but i have a reprogammed ecu with a 4th gen vtec crossover,8500 redline and upgraded valves. Hope this helps
do you have stock springs still? that would be more important when it comes to revving over stock. and on a side note, if you have to rev to 8k to stay in vtec, you shift too slow.

yea, i still have stock springs but have managed to shift to 8k safely with just valves for more than 6 months now. sorry I didnt post about staying in the powerband a little clearer, I can stay in the powerband by shifting at 7k rpm but find myself higher in the powerband when i shift at 8k rpm. And NO, I dont shift slow

Just wondering do u have a short throw shifter?, If do what kind?

I dont have a short shifter because all i could find for the 5th gens was an adapter which I dont like. However, I do have a weapon r throttle rotor that cuts my acceleration pedal in half. This thing is really sensitive to the touch that even when resting on the gas pedal, it takes you to like 3-4k rpm. When shifting, it gasses to full throttle so fast that its almost like power shifting. Although the RSX-S has an advantage over our prelude's, I've managed to edged quite a few of them out with this mod because of quick-shifting againts quick shifting.

How much did your throttle rotor cost?

you could find them on ebay for cheap now. no more than $30. I bought it for $33 last year so I would imagine it being alot cheaper now. h22lude, if you get this, you have to be a very light footed for regular driving or you will find yourself jerking a bit and over-revving. It took me like couple hours of driving to get the hang of it. hope this helps man

So its that sensitive?Still sounds cool, but are you happy with it even on just every day driving? Im thinkin i could get the hang of it. thsnks

yea man this things koo. everyday driving is fine but the only thing I think you would be dissapointed is having a hard time to launch when racing because its hard to keep the rpm stable. And even when you get it stable it would move up and down a lil. I recently got full throttle launch programmed to my ecu and dont have to put up with this anymore although. let me know how you like it homie and if you need any help with the installation just hit it up.